A young Xiaozhi girl joined one of the clans in the "Night City". She followed in the footsteps of her older sister, who is an authoritative member of the clan. Now Xiaozhi will be trained in the skills of combat, the possession of a katana and gain experience in the use of weapons. Under the guidance of his authoritative older sister. This young girl has a very interesting life path ahead of her. Side by side with his sister.